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Finding the Fourth Proportional to 403,363.80, 605,045.70 and 166,876.20

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Solution

The fourth proportional to 403,363.80, 605,045.70 and 166,876.20 is: 250,314.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,363.80 : 605,045.70 = 166,876.20 : x
  2. Step 2: Convert to fraction form
    403,363.80/605,045.70 = 166,876.20/x
  3. Step 3: Cross multiply
    403,363.80x = 605,045.70 × 166,876.20
  4. Step 4: Simplify right side
    403,363.80x = 100,967,727,242.34
  5. Step 5: Solve for x
    x = 100,967,727,242.34/403,363.80
  6. Step 6: Final answer
    x = 250,314.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.